447640225 has 12 divisors (see below), whose sum is σ = 555508096. Its totient is φ = 357832080.

The previous prime is 447640223. The next prime is 447640229. The reversal of 447640225 is 522046744.

It is not a de Polignac number, because 447640225 - 2¹ = 447640223 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (447640223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29284 + ... + 41866.

Almost surely, 2^447640225 is an apocalyptic number.

It is an amenable number.

447640225 is a deficient number, since it is larger than the sum of its proper divisors (107867871).

447640225 is a wasteful number, since it uses less digits than its factorization.

447640225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14016 (or 14011 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 34.

The square root of 447640225 is about 21157.5098960156. The cubic root of 447640225 is about 764.9675894395.

Adding to 447640225 its reverse (522046744), we get a palindrome (969686969).

The spelling of 447640225 in words is "four hundred forty-seven million, six hundred forty thousand, two hundred twenty-five".